Physics, 06.10.2019 09:02, jones03riley
Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile collision. cars are designed with a "crumple zone" in the front of the car. in the event of an impact, the passenger compartment decelerates with the car. by contrast, an unrestrained occupant keeps moving forward with no loss of speed (newton's first law! ) until hitting the dashboard or windshield, as we saw in figure 4.2. these are unyielding surfaces, and the unfortunate occupant then decelerates over a distance of only about 5 mm.
a. a 60 kg person is in a head-on collision. the car's speed at impact is 15 m/s.
estimate the net force on the person if he or she is wearing a seat belt and if the air
bag deploys.
b. estimate the net force that ultimately stops the person if he or she is not restrained
by a seat belt or air bag.
c. how does these two forces compare to the person's weight
Answers: 3
Physics, 22.06.2019 17:00, gtamods402
How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters
Answers: 2
Physics, 23.06.2019 00:00, garysingh7
Determine the largest intensity w of the uniform loading that can be applied to the frame without causing either the average normal stress or the average shear stress at section b–b to exceed σ=19 mpa and τ=24 mpa, respectively.
Answers: 3
Physics, 23.06.2019 02:30, Andrewecolt1993
Aforce is a vector quantity because it has both?
Answers: 1
Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an...
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